Improved machine for piercing leather



UNITED STATES PATENT OFFICE.

G. V. SHEFFIELD AND J. F. COBURN, OF HOPKINTON, MASSACHUSETTS.

IMPROVED MACHINE FOR PIERCING LEATHER.

Specification forming part of Letters Patent No. 57,780, dated September 4, 1866.

To all whom t may concern:

Beit known that we, GEORGE V. SHEFFIELD and JAMES F. OOBURN, of Hopkinton, in the county of Middlesex and State of Massachusetts, have invented a new and Improved Machine for the Piercing ot' and Inserting Steel or other Wires in Leather; and we do hereby declare that the following is a full, clear, and

exact description thereof, which will enable others skilled in the art to make and use theV same, reference being had to the accompanying drawings, formingpart of this specification.

The present invention relates to a machine to be used for the piercing of leather and inserting steel or other wires therein, the object being to increase the wear and durability of the leather; and the invention consists in a novel arrangement of mechanical devices, whereby the leather is fed through the machine, first to the piercing instrument or tool, and then to the die for forcing the wire therein, which tool or die is brought to bear at the proper times against the leather, as will be apparent from the following detail description of the machine, reference being had to the accompanying plate of drawings, in which- Figure l is a front elevation of the machine; Fig. 2, an end elevation; Fig. 3, a transverse vertical section, taken in the plane of the line :c Fig. l; Fig. 4, a detail view to be hereinafter referred to.

Similar letters of reference indicate like parts.

A in the drawin gs represents the bed of the machine, having at each end an upright post, B. Across from one to the other extends an arch beam or bar, G, secured to the same at each end in any proper manner 5 D, the driving-shaft, turning at one end in bearings of one of the upright posts B, and extending horizontally under the arch-beam C for about one-half of its length, and turning in bearings of the hanger E, secured to the under sideof the beam C; F, a pulley, secured to driving or main shaft D, around which it is intended to pass an endless belt or band, Vfor the driving of the same. The shaft D has two cams, G and H, secured to it, one, G, between the pulley and end post, and the other, H, at the inner end of the shaft; I, a horizontal platform or table, secured in and between the two uprights B B, under which table, in the direction of its length, extends a horizontal shaft, J 7 turning in bearings at each end ot' the posts B, and with a ratchet-wheel, K, secured to one of its ends upon the outside of the post, between which and the pulley of the main shaft the cam G is placed; L, an upright lever-arm, hung and turning by its forked end M upon the shaft J as a fulcrum, in which lever is hung a spring-pawl, N, engaging with the teeth ofthe ratchet K, through which pawl, as the lever is swung forward by the abutment against, and travel of, the cam G over its upper end, the ratchet-wheel, and consequently its shaft J, are revolved, when, the cam releasing itself from the lever, it is drawn or swung back to its original position by means of a spiral spring, O, hung at one end to it and at the other connected with a fixed staple, P, of the end post, B, the spring-pawl Q, hung upon the post and engaging with the ratchetwheel K, preventing it from being turned in the opposite or wrong direction.

At a point half-way, or nearly so, between the two end posts B B, a feed-wheel, B, is secured to the shaft J, the edge or periphery of which is roughened, and projects slightly above and through the central openin g, S, in the platform or table.

T is a bar placed just above the table I, and

parallel with 1t, extending from one post, B,

to the other.

V is a slide, moving in and between the uprights V V upon the upper side of the horizontal bar T, the upper end of which slide is hung upon a lever-bar, W, extending toward one of theposts B under the main shaft D, turning upon a fulcrum, a, of such post. In the lower end of this slide the tool X, for piercing the leather, and the hammer-rod J, for forcing the wire into the hole pierced by the tool X, are secured, the latter to the rear of the former,

butin the same line therewith, as plainly shown in the drawings, (see Fig. 3,) both of which tools play through suitable apertures made in the block Z, secured to the under side of the bar T. A2 is a bent spring, secured to the upper side of bar T, and so bent around that the lever W rests upon it. p

B2 is another lever-bar similarly hung to the same post with the lever W, and extending therefrom in a line parallel with said lever, but to the rear of it, with a slide, G2, hung upon its outer end and moving in and between the guideuprights D2 of the bar T. 0n this slide is a spring-pawl, E2, that, as the slide is depressed, engages with the teeth b of the ratchet feed rollers or wheels F2, placed with their peripheries in contact, or nearly7 so, with each other. These rollers are hung within the bar T, so as to move toward or away from each other, and are held so as to tightly bind the wire which passes in and between them by means of rollers or wheels G2, one to each wheel F2, upon their outside edges, hung in the lower end of lever-arms H2, turning upon fulcrums of the bar T, the upper ends of which arms are connected together by a spiral spring, I2. J2 is a bent spring, secured to upper side of bar T, on which spring the lever B2 rests.

K2 is a knife or chisel, secured in inner end of a horizontal slide, L2, arranged in the under side of bar T, the outer end of which slide is connected to the arm M2 of a shaft, N2, turning at each end in bearings of the projecting pieces upon the rear side of the bar T, which shaft has a long projecting arm, P2, extending upward toward the cani H, against which the cam acts as it is revolved, moving in the said slide with its chisel, which is drawn out when the cam has become free of the said arm P2 by the action of the spiral spring Q2 coiled around the said shaft N2.

Having thus in detail described the various parts composing the machine embraced in the present invention, I will now proceed to eX- plain the manner 1n which they operate.

The leather which is to be pierced with wire is placed upon the platform I over the feedf roller R, against which it is held in close contact by the projecting block Z of the bar T, when, turning the main or driving shaft AD in any proper manner, and in the right direction, the leather is caused to be fed along through the action of the pawl N, upon the ratchetwheel K of the feed-shaft J, when the cam H then acting upon the lever W, the slide U,

with the piercing tool and hammer, is forced down and' toward the leather, causing the piercing-tool to pierce the same, and the hammer to force in the hole previously pierced the wire which is intended to insert therein, that by the action of the cam upon the next lever B2 is fed downward, and broken or cut off by the chisel or knife K2, and at the same time thrown into proper position for the hammer to act upon and force it into the leather, the above-described operation of lthe machine continuing so long as the driving or main shaft is turned.

The feed-rollers F2 for the wire are groovcd, so as to guide the wire between them, and cause a better and firmer hold upon it.

To enable the feed-roller R to be adjusted in height with reference to the platform S, we have arranged the journals or boxes F2 of its shaft J in ways or guides G2 of the frame-work uprights B B, in the lower side of each of which boXes F2 screws a spindle, H2, having a bevel-gear wheel, I2, upon their lower ends, which are connected together through bevelgear wheels J2 upon the horizontal shaft K2, having a milled iiange or wheel, L2, for convenience in turning it, whereby, as is obvious, ify the said shaft K2 be turned the feed-roller shaft can be either raised or lowered, as the case may be, in an even manner throughout its whole length.

We claim as new and desire to secure by Letters Patent- The combined arran gement of the feed-wheel R, piercing-tool X, hammer Y, feed-rollers F2, and sliding chisel R2, or its equivalent, substantially as herein described, and as and for the purpose specified.

GEORGE V. SHEFFIELD. JAMES F. GOBURN.

Witnesses:

L. H. WAKEFIELD, ELIJAH WINsnIP. 

